Exam 7: The Sun

In some regions of the corona, the magnetic field does not loop back to the sun, and the gas escapes unimpeded. These regions are called ____ and are believed to be the source of the solar wind.

The Zeeman effect shows that sunspots contain magnetic fields.

If the spectrum of a sunspot shows that it has a maximum intensity at 650 nm, what is the temperature of the sunspot?

What does the granulation tell us about the layers below the photosphere?

If one kilogram of hydrogen is converted to helium, how much energy will be generated?

____ occur about 130 km above Earth's surface near the polar regions when energy in the solar wind guided by Earth's magnetic field excites gases in the upper atmosphere.

____ is (are) produced by atomic transitions in the presence of a strong magnetic field.

Sunspots

Spicules

A filtergram is used to study layers below the photosphere.

Most of the visible light we see coming from the sun originates from the

Much of the solar wind comes from ____ where the magnetic field does not loop back into the sun.

The ____________________ shows that sunspots are associated with magnetic activity.

The sun appears to rotate only because Earth is revolving about the sun.

If energy is carried by the bulk motion of matter, that is called ____________________.

Spicules

Modern astronomers suspect the corona is heated by

The capture of too few solar neutrinos by Davis in the solar neutrino experiment

Which of the following is evidence that convection occurs in the layers just below the sun's photosphere?

What evidence do we have that the sunspots are magnetic?